Patent US71983A successfully refreshed from Google Patents.
US3209986A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure exchangers
Assignee: Power Jets Research and Development Ltd
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Filing: 1963-05-13
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Granted: 1965-10-05
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Expires: 1983-05-13
Abstract
No abstract record available.
Inventors
- 👤 John A C Kentfield
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:58
CPC Classifications
F; F04; F04F; F04F13/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PRESSURE EXCHANGER INCLUDING A CELL ROTOR, A PLURALITY OF SUBSTANTIALLY RADIALLY DISPOSED MOVABLE WALLS ARRANGED AROUND THE PERIPHERY OF THE CELL ROTOR AND DEFINING A PLURALITY OF OPEN-ENDED CELLS, WHEREIN ONE FLUID QUANTITY EXPANDS SO COMPRESSNG ANOTHER FLUID QUANTITY WITH WHICH IT IS IN DIRECT CONTACT, END-PLATE STRUCTURE EFFECTIVE TO CLOSE THE ENDS OF THE CELLS BUT HAVING PORTS INCLUDING AT LEAST ONE PORT OPERATIVE TO CONVEY FLUID AT A HIGH-PRESSURE AND AT LEAST ONE PORT OPERATIVE TO CONVEY FLUID AT A LOW-PRESSURE, STRUCTURE CIRCUMFERENTIALLY SURROUNDING THE CELL ROTOR, AND MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN SAID WALLS AND SAID CELL ROTOR TO VARY, ON ROTATION OF THE CELL ROTOR, THE VOLUME OF THE CELLS FROM A POSITION OF MINIMUM VOLUME ADJACENT ONE OF THE SAID PORTS OPERATIVE TO CONVEY FLUID AT A HIGH-PRESSURE, TO A POSITION OF MAXIMUM VOLUME ADJACENT ONE OF THE SAID PORTS OPERATIVE TO CONVEY FLUID AT A LOW-PRESSURE.
Claim 2
Dependent Claim
154 words
A PRESSURE EXCHANGER INCLUDING A CELL ROTOR, A PLURALITY OF SUBSTANTIALLY RADIALLY DISPOSED MOVABLE WALLS ARRANGED AROUND THE PERIPHERY OF THE CELL ROTOR AND DEFINING A PLURALITY OF OPEN-ENDED CELLS, WHEREIN ONE FLUID QUANTITY EXPANDS SO COMPRESSNG ANOTHER FLUID QUANTITY WITH WHICH IT IS IN DIRECT CONTACT, END-PLATE STRUCTURE EFFECTIVE TO CLOSE THE ENDS OF THE CELLS BUT HAVING PORTS INCLUDING AT LEAST ONE PORT OPERATIVE TO CONVEY FLUID AT A HIGH-PRESSURE AND AT LEAST ONE PORT OPERATIVE TO CONVEY FLUID AT A LOW-PRESSURE, STRUCTURE CIRCUMFERENTIALLY SURROUNDING THE CELL ROTOR, AND MEANS FOR EFFECTING RELATIVE MOVEMENT BETWEEN SAID WALLS AND SAID CELL ROTOR TO VARY, ON ROTATION OF THE CELL ROTOR, THE VOLUME OF THE CELLS FROM A POSITION OF MINIMUM VOLUME ADJACENT ONE OF THE SAID PORTS OPERATIVE TO CONVEY FLUID AT A HIGH-PRESSURE, TO A POSITION OF MAXIMUM VOLUME ADJACENT ONE OF THE SAID PORTS OPERATIVE TO CONVEY FLUID AT A LOW-PRESSURE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-10-04 | 1969-04-05 | 1969-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-04 | 1973-04-05 | 1973-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-04 | 1977-04-05 | 1977-10-05 | $7700.00 | Window Closed / Lapsed |